1 Kings 21:17

In these verses we may observe, I. The very bad character that is given of Ahab (Kg1 21:25, Kg1 21:26), which comes in here to justify God in the heavy sentence passed upon him, and to show that though it was passed upon occasion of his sin in the matter of Naboth (which David's sin in the matter of Uriah did too much resemble), yet God would not have punished him so severely if he had not been guilty of many other sins, especially idolatry; whereas David, except in that one matter, did that which was right. But, as to Ahab, there was none like him, so ingenious and industrious in sin, and that made a trade of it. He sold himself to work wickedness, that is, he made himself a perfect slave to his lusts, and was as much at their beck and command as ever any servant was at his master's. He was wholly given up to sin, and, upon condition he might have the pleasures of it, he would take the wages of it, which is death, Rom 6:23. Blessed Paul complained that he was sold under sin (Rom 7:14), as a poor captive against his will; but Ahab was voluntary: he sold himself to sin; of choice, and as his own act and deed, he submitted to the dominion of sin.

— Matthew Henry's Concise Commentary (public domain)

ELIJAH DENOUNCES JUDGMENTS AGAINST AHAB AND JEZEBEL. (Kg1 21:17-29) Hast thou killed, and also taken possession?--While Ahab was in the act of surveying his ill-gotten possession, Elijah, by divine commission, stood before him. The appearance of the prophet, at such a time, was ominous of evil, but his language was much more so (compare Eze 45:8; Eze 46:16-18). Instead of shrinking with horror from the atrocious crime, Ahab eagerly hastened to his newly acquired property.

— Jamieson-Fausset-Brown Commentary (public domain)